<!DOCTYPE html>
<html lang="en">
<head>
    {% block head %}
    <meta charset="UTF-8">
    <title>{% block title %} hello flask {% endblock %}</title>
    {% block style %}
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
    <!-- JavaScript Bundle with Popper -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
    {% endblock %}
    {% endblock %}
</head>
<body>
    <main>
        {% block content %}
        {% endblock %}
    </main>
    <footer>
        {% block footer %}
        {% endblock %}
    </footer>
    {% block script %}
    {% endblock %}
</body>
</html>